Integrate Postonce with Klaviyo to automate workflows, sync data between apps, and eliminate repetitive tasks with AI-powered automation.
Get all Accounts in Klaviyo when New Post Created in PostOnce
Find Profile in Klaviyo when New Post Created in PostOnce
Create Profile in Klaviyo when New Post Created in PostOnce
Create List in Klaviyo when New Post Created in PostOnce
Add Profiles to a List in Klaviyo when New Post Created in PostOnce
Start from a real workflow other teams are already running.
Postonce
When this happens...
New Post Created
Klaviyo
Automatically do this!
Get all Accounts
Find Profile
Create Profile
Create List
Add Profiles to a List
Remove Profile from List
Update a Profile
Subscribe Profile
Send Campaign
Get catalog categories
List Catalog Items
List Profiles
Get all Accounts in Klaviyo when New Post Created in PostOnce
Use this flowFind Profile in Klaviyo when New Post Created in PostOnce
Use this flowCreate Profile in Klaviyo when New Post Created in PostOnce
Use this flowCreate List in Klaviyo when New Post Created in PostOnce
Use this flowAdd Profiles to a List in Klaviyo when New Post Created in PostOnce
Use this flowRemove Profile from List in Klaviyo when New Post Created in PostOnce
Use this flowUpdate a Profile in Klaviyo when New Post Created in PostOnce
Use this flowSubscribe Profile in Klaviyo when New Post Created in PostOnce
Use this flowSend Campaign in Klaviyo when New Post Created in PostOnce
Use this flowGet catalog categories in Klaviyo when New Post Created in PostOnce
Use this flowEverything you can automate between Postonce and Klaviyo.
When this happensTriggers
A trigger is an event that starts a workflow.
Runs when a new post is created. You can filter by account and set the lookback minutes.
Runs when new profile is created. Polls at the configured interval.
Action is the task that follows automatically within your Postonce integrations.
Generate a signed upload URL for a media file by filename; MIME type is auto-detected from the filename extension.
Retrieve a media item's storage path and public URL using its media ID.
Create a post to selected accounts with content, media, scheduling, and platform-specific options.
Retrieve posts or a single post by ID. Leave fields empty to return all data; set limit (1–100) and after cursor.
Cancel a scheduled or pending post by Post ID without deleting its record or published content.
Publish a scheduled or draft Postonce post immediately by specifying the post ID.

Follow a simple walkthrough to create, test, and launch your first automation.
Connect your apps
Link the apps you want to automate.
Configure your workflow
Set up triggers, actions, and map your data.
Test & publish
Test your workflow and publish it.
Recognized by leading review platforms and trusted by 10,000+ businesses worldwide.
Just describe the task in plain English. viaSocket AI selects the right apps, builds the workflow, maps the fields, and prepares everything for review before you publish.

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PostOnce is a social media automation platform that enables creators, teams, and businesses to schedule and crosspost content across platforms including TikTok, Instagram, YouTube, Facebook, LinkedIn, X, Threads, Bluesky, and Pinterest.
Learn moreKlaviyo is a powerful email and SMS marketing automation platform designed to help businesses grow by leveraging data-driven marketing strategies. It enables users to create personalized and targeted campaigns, track customer behavior, and analyze performance metrics to optimize marketing efforts.
Learn moreSign up for a free viaSocket account, then authorize both your Postonce and Klaviyo accounts. From there, pick a trigger in one app and an action in the other. Your first workflow can be live in under five minutes.
Yes. viaSocket uses instant triggers where available, so data moves between Postonce and Klaviyo as soon as the event happens. Scheduled polling triggers run at a maximum interval of 15 minutes.
Yes. You can map specific fields, apply filters to skip records that do not match your conditions, and transform values before they reach Klaviyo. No coding required.
Yes. You can set up a workflow where Postonce triggers actions in Klaviyo, and a separate workflow where Klaviyo triggers actions in Postonce. Both run independently and in real time.
viaSocket logs every run so you can see exactly what succeeded and what failed. Failed tasks can be retried from the dashboard without re-configuring the workflow.
Yes, there is a free plan that covers basic workflows between Postonce and Klaviyo. Paid plans unlock higher task limits, faster polling, and advanced features like multi-step workflows and conditional logic.
No. The entire Postonce and Klaviyo integration is built through a visual, point-and-click interface. Code blocks are available if you want them, but they are never required.